Hydraulic heat regulator



Feb. 4, 1936.

M. OLSON HYDRAULIC HEAT REGULATOR Filed June 27, 1955 3 Sheet's-Sheet 1 TH??? 3. h a:

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7 4. n v w 1 Mar} 0190 Allomey M. OLSON 2,029,440

HYDRAULIC HEAT REGULATOR Feb. 4,1936.

Filed June 27, 1955 3 Sheets-Sheet 2 Allbmej Feb. 4, 1936. M. OLSON HYDRAULIC HEAT REGULATOR 3 Sheets-Sheet 3 Filed June 27, 1935 A llomey Patented Feb. 4, 1936 OFFICE This invention relates to a hydraulic heatregulater, the general object of the invention being to provide means for regulating the draftof a heating plant through the means of a thermostat controlling another means which controls the flow of water to a cylinder, the piston of which operates the dampers of the heating plant, whereby the heat in the roomof a building is kept automatically at a predetermined temperature.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in; the accompanying' drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings Wherein like characters denote like or corresponding parts throughout the several views,- and in Figure 1 is an elevation of the invention.

Figure 2 is a top planview of Figure 1 with parts omitted.

Figure 3is-a perspective view of the magnet operated means.

Figure 4 is a view of the lever controlled by Figure 7 is a view of one of the other lever operating members.

Figure 8 is a diagrammatic perspective. view of the apparatus.

Figure 9 is a view of one of the other.- switches.

In these drawings thev letter A indicates the. supporting framefor the apparatus and this frame with the parts carried thereby is enclosed in a casing B shown in dotted lines in Figure 1. A cylinder l is supported by the frame and contains a piston 2, the rod 3 of which extends through one end of the cylinder and has attached to its outer end the elongated cross-head 4.

A pipe 5 is connected to the water system and the flow of water through this pipe is regulated by the valve 6 shown in Figure 1. Branch pipes I lead from this pipe 5 to the ends of the cylinder I and each pipe contains a valve 8 to which an arm 9 is connected. Exhaust pipes II! are also connected to the ends of the cylinder and these exhaust pipes connected with a discharge pipe H which may lead to a. drain or which may be connected to a spray for spraying the coal in the bin. Eachexhaust pipe Hi has a valve l2 thereconnected by a link 33 with an ear 23.. of the cross-head and the upper end of the lever is conin and an arm 13 connected to the valve and. a rod I l connects the arm N3 of the exhaust pipe leading from one end of the cylinder to the arm 9 of the inlet valve of the pipe I which leads to the opposite end of the cylinder, as shown in 5 Figure 8, so that when an inlet valve is openedto permit water to flow into one end of the cylinder the outlet valve of the discharge pipe con-. nected with the opposite end of the cylinder is opened so that water can enter one end of the 10 cylinder to move the piston in one direction and. the water in front of the piston can discharge through the exhaust pipe at the opposite end of the cylinder.

A bellcrank lever I5 is pivotally supported on 15 a bracket l6 attached to a large bracket I1 supported from the frame A and one arm of the bellcrank lever is adjustably connected to. a loop 18, as shown in Figure 8 and this loop is connected by the flexible members IS with the dampers of 20 the heating plant so that the movement of the bellcrank controls the dampers to regulate the heat. A link 20 connects the other arm of the bellcrank lever IS with a projection 2| on the cross-head. Thus the movement of the piston 2 25 in the cylinder I under the action of the Water will move the cross-head and said movement of the cross-head will operate the bellcrank lever V to control the dampers of the heating plant.

The cross-head slides on the rods 22 supported a in the frame and said cross-head is formed with the upwardly extending ears 23 and a projection 24 extending at one end thereof.

A substantially channel-shaped member 25 is connected by spring hinge 26 to a bracket 21 attached to the underside of a partition member 28 p which extends horizontally across the frame, said member 25 and the parts associated therewith being shown in Figure 7. This member 25 is provided with the outwardly extending wings 29 at. its sides and with an inclined part 3|] at its lower free end. One wing 29 is adapted to engage a lever 3i pivoted at 32 on the axis of the hinge on the member 25 and the lower end of the lever is nected by a spring 34 with the lower end of a lever 35 pivoted to the frame at 36 so that when this lever is moved to one direction by the crosshead the spring 34 will be tensioned.

A second channel-shaped member 31, similar to the member 25, is connected by a spring hinge to the supporting bracket 38 attached to an underpart of the partition 28 and this member 31 is arranged opposite the member 25 anda lever 39 has its upper end forked and pivoted to the hinge pin of the member 3? and the lower end of this lever tensloned while the spring iI will be contracted and then when the cross-head moves in the opposite direction the spring @I will be tensioned while the spring. 36 is contracted. Thus these parts will act to cause the springs to move the lever 35 in one direction or the-other, in accordance with which spring is tensioned and after the lever 35 has been released by the latch means which includes a pin 92 on the upper end of the lever 35 which fits in an opening 43 in a lever 44 pivoted at its upper end to a part of the frame as shown at 45. The opening 43 has an enlarged lower part and a slot-like upper part, the upper part acting to hold the lever 35 against movement when the pin is in the slot-likepart and as the lever 49 swings from one side to the other the pin 42 will-enter the enlarged part and thus the lever 35 tends to swing on its pivot. A latch lever 46 is normally held in engagement with one side or the other of the lower end of the lever 94 by a spring 41. Said latch lever moves downwardly tc releasing position by the armature as of the magnetic means 19, when circuit to said means is,

closed and when this occurs the lever 35 will be swung by that spring 39 or M which is tensioned and this swinging movement of the lever 35 will swing the lever 64 on the opposite side of the latch lever 46 and then the latch lever returns to normal position to hold the parts in their new positions.

The armature lever 98 is connected to the latch lever 46 by a link 59 and a conductor 5i connects the magnetic means with a battery 52, the other side of the magnetic means being grounded as shown at53. The opposite side of the battery is connected to the thermostatic means 59, one terminal of which is connected by a conductor 55 with a normally closed switch 5'! and this switch is connected by a conductor 58 with a spring switch 59 which is engaged by the member 31 when said member is swung toward the cylinder, this member 31 being grounded. The other terminal 60 of the thermostat is connected by a conductor 6| with a normally closed switch 6?. and this switch 62 is connected by a conductor 63 with a spring switch 64 adapted to be engaged by the member 25 when such member 25 swings away from the cylinder I. These switches 53 and '66 are constructed and arranged as shown in Figure 1 and are supported and insulated from the bracket 65 which depends from the partition 28. Thus when the member 37 is in contact with the switch 59 and the thermostat is in contact with the terminal 55 the circuit to the magnetic means will be closed and when the thermostat is in contact with the terminal 69 and the member 2'5 is'in'contact with the switch 59 the thermostat will close the circuit to the magnetic means. A dog 66 controlled by a spring 67 is adapted to hold the member 25 against movement by'its spring hinge and a link 68 connects this dog with a bellcrank 69 to which is connected a rod 16 slidably supported in the frame and having an adjustable collar ll thereon for engagement by the'projection 24 onthe cross-head so that wh n the Piston.

2 moves toward the right in Figure 8 the projection 29 will strike the collar II and thus shift the rod "I6 which will cause the bellcrank 69 and the link 68 to move the dog 66 to releasing position.

A similar spring controlled dog "i2 is provided for the channel-shaped member 31, this dog be ing normally held in holding position by a spring I3 and a link 14 connects the dog to a bellcrank I5 which is connected to a rod I6 slidably arranged in the frame and having an adjustable collar I'I thereon which is also engaged by the projection 24 of the cross-head when the piston moves to the left so that the dog 12 is moved toreleasing position when the cross-head is moved to the left.

A wing 29' on the channel-shaped member 3'! engages the lever 39' and the opposite wing 29' of this member 31 is adapted to engage the lower end of a lever 89 pivoted intermediate, its end to a part of the frame as shown at SI and said lower end of the lever 89 is connected by a link 82 to the end as shown at 84 and the'lower end of this;

lever 83 is connected by a link 85 with an arm I3 of one of the exhaust valves I2. 7 r

A pair of oppositely arranged substantially channel-shaped members 86 and 81 are each connected by a spring hinge 88 with a supporting bracket 89, see Figure 6, to the partition member 23, these members extending upwardly above the partition member and each member is provided with the side wings 99 and each member at its lower end carries a projection 9| of non-conductive material for separating the parts of the switches 57 and 62. The member 89 is held in retracted position'by a dog 92 and the member 81 is held in retracted position by a dog 93. each channel-shaped member having an inclined bar 94 thereon for enabling it to pass the dog after which the dog swings downwardly and holds the member in retracted position. The dog 92 is carried by a shaft 95 having. an arm 96 attached thereto which is connected by a link 91 with the lever above the pivotal point 36 of said lever. The dog 93 is attached to a shaft 99 which has an arm 99 thereon connected by a link I00 with the lever 35 above the pivotal point thereof. Each of the arms 96 and 99 is freely rotatable on the shaft but said arm will rotate the shaft when pressed against a projection on an arm IIJI fastened to the shaft. Each dog is moved to engaging position by a spring I02 and has one end fastened to each arm I6I and its other end to a part of the frame. 7

One of the wings 99 of the member 86 is adapted to engage the upper end of the lever 83 while a similar wing of the member 81 is adapted'to engage the upper end of the lever 89. The other wing of the member 36 is adapted to engage the upper part of a leverI93 which is connected by a a link I69 with an ear of the cross-head while the gage the upper end of a lever I05 which is connected by a link I96 to another ear of the crosshead. The pivotal points of. the levers B3 and I93 are in alignment with the hinge pm of the member 36 and if desired these levers can be is broken by the thermostat being in an intermediate position. However, if the temperature in the room in which the thermostat is located should change sufficiently tocause the thermostat to contact the terminal 55 for instance, it being understood that the device is so connected with the dampers as to cause this action, the circuit will be closed and current will pass from the battery through the thermostat, the terminal 55, conductor 56, switch 51, conductor 58, switch 59, the member 3? and through the magnetic means 49 to the battery. Thus the armature 48 will be lowered which will swing the latch lever 46 to releasing position and as the spring 34 is contracted and the spring 4! under tension the. lever 35 will be swung on its pivot 38 by said spring 41 so that the pin it! will swing the lever 44 to the left in Figure 8 so that said lever 44 will be on the opposite side of the latch lever as shown in Figure 3. This movement of the lever 35 will release the dog 92 through means of the link 9?, arm 96 pushing against arm Hi! to rock the shaft 95. Thus the member 85 will swing to the right under the action of the spring hinge and this movement will cause one of the wings 90 to engage thelever B3 and rock the same-son its pivot and through means of the link 85 and the link It the inlet valve 8 and exhaust valve l2 will be open so that water will enter the left hand end of the cylinder and the water in the other end pass through the exhaust. Thus the piston will be moved to the right, forcing the cross-head to the right and this movement of the cross-head will rock the lever which will tension the spring 34 and the lever 39 which releases tension on the spring ll and thus the lever 35 will be moved until the lever 44 strikes the left hand side of the latch lever 46 when the parts will be held in the position shown in Figure 3. As the member 86 moves to the right the switch breaking part 9| thereof will open the switch 51 so as to break the circuit. This movement to the right of the crosshead also shifts the levers I93 and I95, the movement of the lever I93 acting to return the member 86 into engagement with the dog 92 and the movement of the lever I05, swinging away from the member 81 permitting future movement to the left of said member 8?. When the cross-head reaches the limit of this movement to the right the projection 24 engaging the collar H will move the rod '59 and through the bellcrank 59 the link 68 will move the dog 66 to releasing position which permits the member 25 to swing forwardlly so that one of. the wings 29 engaging the lower end of the lever 83 will move said lever 83 to a position where the links 85 and [4 will close the inlet and exhaust valves that have been open so that the parts will come to rest with the piston 2 at the right hand end of the cylinder and of course the movement of the cross-head will have changed the dampers. The parts are now in a position to operate when the thermostat engages the other terminal 69 and when this occurs current will flow through the conductor 6|, the switch 62, conductor 63, switch 54 which is in contact now with the member 25, the ground, thus completing the circuit to the magnetic means which will operate the armature 53 to lower the latch member 46 so that the tensioned spring 34 will move the lever 35 to the right in Figure 8. This action of the lever 35 will cause the arm 99 to engage the arm I0! and rock the shaft 98 so as to move the dog 93 to releasing position. Then the member 81 swings to the left, operating the lever 89 to cause the link 82 to open the other inlet and exhaust valves 8 and I2 so that water will flow into the right hand end of the cylinder and escapes in the left hand end thereof which forces the piston to the left. The movement of the member 8'! will open the switch 62 and as the cross-head moves to the left it will reverse the position of the dampers and reset the parts to the position shown in Figure 8, the engagement of. the projection 24 with the collar TI causing the rod 76 and the bellcrank to move the dog 12 to releasing position so that the member 3! will move forwardly into contact with the switch 59 and the other parts being moved to the position shown in Figure 8.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What is claimed is:

1. A hydraulic heat regulator for a heating plant comprising a reciprocating member, means actuated thereby for adjusting the dampers of the heating plant, a cylinder, a piston therein connected with the reciprocating member, means including inlet and exhaust valve means in each end for introducing water into the ends of cylinder and exhausting the water therefrom for reciprocating the piston, latchable spring actuated means arrangedin sets, one set acting to open an inlet valve in one end and an exhaust valve in the other end and the other set opening the other valves, thermostatic control means for releasing one or the other of the spring means to open its valves, sets of means for returning said spring means to latched position and closing the valves and means whereby the resetting means are operated by movement of the reciprocating member.

2. A hydraulic heat regulator for a heating plant comprising a reciprocating member, means actuated thereby for adjusting the dampers of the heating device, a cylinder, a piston therein connected with the member for reciprocating the same, means including inlet valves for connecting the ends of the cylinder with a water supply, means including exhaust valves for connecting the ends of the cylinder to exhaust means, a lever connected to one inlet valve and one exhaust valve, a second lever connected to the other inlet valve and exhaust valve, spring operated members for moving said levers to the valve opening position, latch means for holding the spring means in operative position, a third lever connected with the latch means, a pair of springs for moving the third lever in one direction or the other, a pair of levers connected with the reciprocating member and alternately tensioning the last-mentioned springs, magnetic latch means for holding the third lever against movement, thermostatic means for controlling the magnetic means, a second pair of levers connected with the reciprocating member for moving the spring means first mentioned to latch engaging position and means operated by the spring tensioning levers for controlling the circuit between the thermostatic means and the magnetic means.

3. A hydraulic heat regulator for a heating plant comprising a reciprocating member, means actuated thereby for adjusting the dampers of the heating plant, a cylinder, a piston therein connected with the reciprocatory member, pipes containing valves for supplying water to the ends of the cylinder, exhaust pipes containing valves connected with the ends of the cylinder, a lever connected to one inlet valve and one exhaust valve for actuating the same, a second lever connected to the other inlet valve and exhaust valve for actuating the same, spring members for moving said levers to valve opening position, latch means for holding the spring members in operative position, a third lever connected with the latch means, a pair of springs connected with the third lever for moving the same in one direction or the other according to which spring is tensioned, a pair of levers connected with the reciprocating member for first tensioning one spring and retracting the other spring and then tensioning said other spring and retracting the first spring according to the movement of the-reciprocating member, magnetic latch means for controlling the movement of the third lever by a spring, a

circuit for said magnetic means including a thermostat and a pair of switches, means carried by the spring members for opening said switches when said spring members are actuated by their springs, a second pair of spring members having parts engaging the spring tensioning levers, a latch member for each of the last-mentioned spring members, means for moving the last-mentioned latch members to releasing position by the reciprocating member at the endsof the strokes thereof, a second pair of switches in the circuit closed by the second set of spring members when the same are actuated by their springs, projections on said second set of spring members for moving the valve operating levers to valve closing position and a pair of levers connected with the reciprocating member for returning the first set of spring members to latching position.

MARK OLSON. 2 0 

